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Figure 1. Tunneling of apple fruit caused by larvae of the codling moth. Codling moth is the most important insect pest of apple and pears in North America. Damage is done by the larvae, which are cream-colored caterpillars that tunnel fruit and produce âwormyâ apples (Figure 1).
Believe it or not, the reason why apples and worms are often shown together is because worms are one of the primary pests that attack apples! A pest is an insect or other creature that destroys crops, meaning plants we grow for food.When it comes to apples, the codling moth and apple maggot (which both live as worms during certain stages of life) are two of the most common pests farmers deal with.Unfortunately, the apples that codling moths and apple maggots infest are usually not edible.The reason these insects attack the apples is that they like to eat them too! The fruit gives these insects a place to lay their eggs and something to eat as they grow into their adult form, which leaves holes in the apples.nfortunately, the apples that codling moths and apple maggots infest are usually not edible. The reason these insects attack the apples is that they like to eat them too! The fruit gives these insects a place to lay their eggs and something to eat as they grow into their adult form, which leaves holes in the apples.